NEWS:
Collecting names of users to help with the PRE-Fix solder down to fix the USB before it comes loose
Please PM the Users in the List that resides in your "area" to get a quote on having your N900's USB strengthendr_frost_dk - Location Denmark - Covering EUEstel - Location Poland - Covering EUsEKI - Location UK - Covering UK

PM or Post if you want to "sign up" to help preserve as many N900's out there, the USB still breaks on minimum 1x N900 a week these days.

File down you USB cable's hooks.
Be gentle with your N900 when using USB:
- Don't swing it around (no matter how good the music is)
- Don't drop it on the floor.

NOTE: File is for reference only, any metal file will do

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Why is the USB "Weak" on the N900, well if you look at this picture you can see that the USB "Feet" are only connected to small points, where when soldered down the USB is connected to a MUCH larger area, even if you just make a small patch.

Just adding a quick guide of what to do when making the soldered version.

When you get to the USB after taking of the MicroSD "off" then clean the area beside it, now use what ever you have to scratch of some of the paint (i used a small screwdriver). just scrape it of like it is drawn in the pictures.
Now you should have some exposed copper on each side of the USB, you need to keep the soldering iron on here with solder applied before it "gets a grip" and while you do this hold the iron up against the USB metal, and add solder here to, you need to warm up the USB a little or else the solder will be "cold" soldered and then this fix will be useless because the solder will not really hold on to the USB.
As for the cover, try to assemble the mainboard into the cover and see if it lines up with the hole in the cover, you can press a little down over the USB as when the N900 is assembled the screws hold the whole thing down, so again try to see if it fits before you mod the cover, this is the step that can take the most time in this fix.

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Please PM me with the links i don't find, im searching through threads, but you may remember some, or you might have made some.

ill try to, problem is i have no more to repair... already fixed 3x, i will try some photo shop things later

Only thing i didn't take a picture of was the exposed copper ....

Ha yes i know exactly what you mean because i never got the chance to even take pics on the majority of the ones i repaired, scraping away the green paint was so easy to do as i actually used one of the probes from a mulitmeter that has a very sharp end and only took a few seconds to do, the copper is actually quite thick and was suprised as how easy it was to actually solder down to the earth plain after cleaning it first with a cotton bud soaked in alchohol.

You do realise this "repair" takes care of the usb port problem alltogether on the N900 because after that is done they never come off again ! haha.

Could i make a suggestion here and the next time you do a fix like this try to tin more of the jacket right along the sides and put even more solder on both sides to the earth plain.

Well look at the hole, if more/wider solder is applied then it will take further modifications to the cover to make it all fit, even thou this is only half the USB it still is the most load baring half, just giving strength to that side will still give much added strength to the USB.

And if anybody can't see how this will help then let me try to explain.
Look to the pictures (first 2, notice the 4 "legs" that holds the USB down, they don't cover much surface at all, now look at the last 2 pictures, here you will see a MASSIVE connection that even goes all the way to the top, this new "connection" is many times stronger then the measly 4 pins that holds the USB in place.